Instinet became the trade execution arm for Nomura in the Americas, Europe, Middle East, Africa and Asia ex-Japan in September 2012, ending a long period of uncertainty on the future of the agency broker. Instinet now provides sales trading, program trading and electronic services for Nomura in addition to its own clients.

Naoki Matsuba, co-head of Nomura’s global markets division and chairman of Instinet, said in a statement: “Instinet is an integral part of the strategic ambitions we have for our equities franchise, particularly given the ongoing shift of client assets into equities globally."

Kondo was appointed sole CEO of Instinet in 2012 following the departure of former co-chief executive Anthony Abenante.

Kellner joined Nomura in 2003 and moved over to Instinet after it was acquired by the Japanese bank in 2007. He has also held senior trading and technology positions at Charles Schwab, Investment Technology Group and Morgan Stanley.

He added in a statement: “Instinet has long been one of the world’s pre-eminent providers of electronic brokerage services, and with the role we now play within the Nomura Group, our relevance to the buyside has never been greater."